Joseph g



(No Model.)

J. G. LEE.

WELL DRILLING MACHINERY. No. 476,467,

Patented June 7, 1892.

NITED STATES PATENT OFFICE.

JOSEPII G. LEE, OE DALLAS, TEXAS, ASSIGNOR OF ONE-HALE TO GIDEON T.

MACON, OF SAME PLACE. l

WELL-DRILLING MACHINERY.

SPECIFICATION forming part of Letters Application tiled November 30, 1891.

To all whom it may concern.-

Be it known that I, JOSEPH G. LEE, a cit-izen of the United States, residing at Dallas, in the county of Dallas and State of Texas, have invented certain new and useful Improvements in Tell-Drilling Uachinery; and I do hereby declare the following to be a full, clear, and exact description of the invention, suoli as will enable others skilled in the art to which it appertains to make and use the same.

The special object of the invention is to make a well-drilling machine which will drop the drill at the proper time and from the proper height.

I5 Figure l of the drawings is a front elevation; Fig. 2, a longitudinal section of the devices on the power-shaft, and Fig. 3 a section on the dotted line :c x of Fig. l.

In the drawings, A represents the drillzo frame, in whose cross-bar ais a bearing for the fast vertical shaft B, which carries at its lower end the loose bevel-wheel B, with the cam h on its periphery. This wheel B meshes with a pinion C, fast on the power-shaft C', which may be rotated by hand or anyother suitable power. The pinion O is connected with a loose drum D by the clutches c d, which are kept together by a spiral spring E,supported by a collar F. The shaft C is connected by the pinion K and spur-wheel J with a shaft O, which carries the windlass I, and the shaft O is connected with a shaft M, carrying the balance-wheel N, by the spur-wheel J and pinion L.

H is the drill-rope, which is fastened at one end to the windlass and at the other end to a drop-drill. The drill is let down and raised out of the well by this windlass, while it is lifted upto the proper height and dropped by the loose drum D, which is for that pur- I pose connected by a short rope G with the Patent NO. 476A6'7, dated June '7, 1892.

Serial No.4l3.543. (No model.)

rope II. In letting down the drill with the windlass set-screw f, which holds lthe collar F, is loosened and the loose drum D pushed away from pinion O, so that the wheels B O will revolve without the drum; also the rope G is disconnected from rope lI and the brakebar h pressed firmly down on the loose drum D. By this means the drill is let down gradually. After this is done the rope G, which 5o is fast to an eyeloolt d on the loose drum D and has a clamp at one end,is secured to rope II, the collar F made tight, so that the spiral spring E will cause the clutches c (l to engage, and the windlass slid away from the wheel J, so that the pins will no longer engage its spokes. The machine is then ready for the drilling operation, which is as follows: The rotation of the shaft C' revolves the drum D and winds up the rope G until the cam I9 6o strikes the brake-bar b and disengages the clutches c d when the drill falls. The rope H passes over a pulley at the top of the drillframe in the usual way.

Having thus described all that is necessary to a full understanding of myinvention, what I claim as new, and desire to protect by Letters Patent, is-

In a well-drilling machine, the bevel-wheel B, having cam h on its periphery and arranged 7o loosely on a vertical shaft B', a bevel-pinion O, fast on power-shaft O,.a loose drum D, sliding on shaft O', the spring E, and collar 4 F, in combination with the drill-rope, as and for the purpose described.

In testimony whereof I affix mysignature in presence of two witnesses.

JOSEPH G. LEE.

Witnesses:

J. M. LARKIN, T. B. SALMoNs. 

